The Smithing crate (small) is an item that can be won from Treasure Hunter, it contains a variety of Smithing materials; there is also a chance for an additional reward. The exact contents are based on the player's level and the amount is less than in the larger crate. It replaces the medium lamps of the corresponding type. During the weekend of 12 October 2012, players had double the usual chance of getting this crate. From 4 to 14 October2013, the chance of getting this crate was increased as well.

The crate can be taken to a suitable location for smelting, and repeatedly drawn on, allowing significantly more smelting before a bank trip is required, especially with a familiar to carry some of the bars produced.